This documentation is maintained as a set of files in the docs
subdirectory of the project, containing source files in “restructured text”
format (see the reStructuredText Refererence) as well as control files
which convert those source texts into HTML, Latex, PDF, etc., using Sphinx
(see the Sphinx manual).

The top-level document is conventionally docs/index.rst. This document
should explain the purpose of the project, and will often link to other
documents outlining usage, APIs, etc.